James Renwick may refer to: Jim Renwick (born 1952), Scottish rugby player Jim Renwick (politician) (1917–1984), politician in Ontario, Canada James Renwick (climate scientist), weather and climate researcher James Renwick (Covenanter) (1662–1688), Scottish Covenanter James Renwick (physicist) (1790–1863), English-American scientist and engineer James Renwick Jr. (1818–1895), American architect, son of the physicist James Renwick (Iowa politician), mayor of Davenport, 1869